If actually the increase of working temperatures of computers is reducing the need of mechanical cooling in data centers, regulations are pushing to a drastic reduction in the employ of refrigerants, responsible of greenhouse gas emissions.

Different HFC (hydro-fluorocarbon) refrigerants are employed in data centers, the most commonly being the R13a (in big plants) and the R410A (in small-medium size data centers). Their control imposed by regulations around the world is making their prices getting higher, pushing operators to find out new technologies and green cooling strategies for data centers.

Among green solutions for data centers, there is the employ of TCOIL dimple jacket exchangers for liquid cooling of the servers. Possibly also leveraging cold water available in the environment (as achieved in the Green Mountain installation in Norway). Getting rid of chillers, in addition to eliminating the use of HFC refrigerants, also would allow low energy consumption in data center operations.

Free cooling is another green cooling strategy for data centers, that stands out, as well as dimple jacket exchangers, for cooling efficiency and sustainability. The free cooling employs cold environmental air where it’s available, representing an efficient solution combined with cold water cooled systems. Moreover, the option of an adiabatic boost, which extends the dissipation efficiency of the free cooling systems, makes this green cooling solutions feasible in a wider range of geographical areas.

L'articolo Dimple jacket and free cooling in data center against global warming proviene da Tempco Blog.

This is an innovative and green-oriented solution that Tempco offers for integration in its industrial cooling plants and solutions, consisting in chillers matching two functions in a unique unit: a traditional chiller combined with free cooling capacity, using two separate arrays of fans respectively dedicated to the chiller and free cooler sections.
With favorable climatic and temperature’s conditions, the free cooler automatically replace the energy consuming chiller, ensuring the same performance levels in thermoregulation, but drastically lowering electric energy consumptions, allowing great costs savings and benefits in energy efficiency.
Unique inlet and output of water circuit, and a unique power supply connection, make this technology even easier to install.

This kind of chiller/free cooler integrated thermal machines are also available on the market with double compressors and inverter, regulating the rotating speed in one of the two compressors: the speed adaptable compressor in the chiller adjusts consumes to the effective needs, matching it with the free cooler contribution to the cooling duty, allowing a constant cooling power regulation in a range between 15% and 100% of nominal power installed, always ensuring maximum performance levels in temperature’s control. The inverter enhanced solution further increases energy saving, for extreme energy efficiency on the chiller.

The higher energy saving chillers also include:
– electronic thermostatic valves
– brushless motors driven fans, both in free cooler and chiller circuits
These components provide a further cut-down in energy consumes, due to a better performance of 2-3% of the thermostatic valve, while brushless motors in fans can ensure, in cold winter season, up to 90% of energy saving in the total amount of power installation.

L'articolo Free cooler/inverter integrated Chillers proviene da Tempco Blog.